20136471156645 has 16 divisors (see below), whose sum is σ = 33004167360192. Its totient is φ = 10477513447040.

The previous prime is 20136471156629. The next prime is 20136471156721. The reversal of 20136471156645 is 54665117463102.

It is not a de Polignac number, because 20136471156645 - 2⁴ = 20136471156629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16371114147 + ... + 16371115376.

It is an arithmetic number, because the mean of its divisors is an integer number (2062760460012).

Almost surely, 2^{20136471156645} is an apocalyptic number.

It is an amenable number.

20136471156645 is a deficient number, since it is larger than the sum of its proper divisors (12867696203547).

20136471156645 is a wasteful number, since it uses less digits than its factorization.

20136471156645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32742229572.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 20136471156645 in words is "twenty trillion, one hundred thirty-six billion, four hundred seventy-one million, one hundred fifty-six thousand, six hundred forty-five".